Introduction to Electric Circuits

An electric circuit is a closed loop or pathway that allows electric charges to flow.

• True
• False

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NGSS.MS-PS2-3

A parallel connection is a type of electrical circuit in which there is a single current pathway.

• True
• False

A series connection is a type of electric circuit in which there are multiple paths.

• True
• False

A resistor is a device that controls current in electric circuits.

• True
• False

An electric current is a flow of charged particles.

• True
• False

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NGSS.MS-PS2-3

Compared to thin wires, electrical resistance in thick wires is:

• greater
• less
• the same

When one bulb in a series circuit containing several light bulbs burn out:

• the other bulbs burn brighter.
• nothing changes in the rest of the circuit.
• none of the other bulbs will light up.

Current is measured in:

• joules
• ohms
• amperes
• watts

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NGSS.HS-PS2-5

NGSS.HS-PS3-5

Identify the following as characteristics of either a series circuit or a parallel circuit:
Consists of units wired in separate branches.

• Series circuit
• Parallel circuit

Identify the following as characteristics of either a series circuit or a parallel circuit:

When one light bulb burns out, they all go out.

• Series circuit
• Parallel circuit